After Eric has a terrible fight with his boyfriend, he returns home and yells at his dog for sleeping on the sofa-even though the dog is usually allowed to sleep on the furniture. Eric's process of venting his anger on a safer target is an example of ________.

For boys, the first ejaculation generally occurs

when facial hair first appears. after the weight and height spurt. following growth of the testes and penis. when the final pubic hair pattern is established.

The two most important symptoms of physical dependence to a drug are:

a) tolerance and failing to attend important occasions due substance use. b) withdrawal and substance abuse. c) tolerance and withdrawal. d) intolerance of most anything and withdrawal.